
*{
    margin: 0;
    padding: 0;
}
/* 这个网页加背景图片 */
.body{
    background-image: url(bj.jpg);
}
.heard{
    height: 440px;
    margin-top: 15px;
    background-color: aqua;
}
.nav{
   width: 100%;
    height: 70px;
    background-color:brown;

}
/* 清除a默认样式 */
.a{
    text-decoration: none;
    color: #01111ce1;
}
.nav>ul>li{
height: 7opx;
padding: 0px 15px;
float: left;
list-style: none;
margin: 0 15px;

}
.nav>ul>li>a{
    color: red;
    line-height: 70px;
}
.nav>ul{
    margin-left: 300px;
    height: 70px;
    
}
.heard>img{
   height: 70px;
   width: 100px;
    float: left;
    margin-left: 180px;

}
/* 内容部分 */
.nev{
    width: 100%;
    height: 1000px;
    background-color:red;
}
.nev>.nev2{
      width: 100%;
    height: 100px;
    background-color:red;
}